- Exposure: LRGB
40x300:18x300:18x220:18x130 seconds
- L binned 1x1, RGB binned 2x2
- Telescope: Stellarvue SV80S @ f/4.77
- Mount: MI-250 GoTo
- Camera: SBIG ST-2000XM CCD, SBIG CFW-8
- Location: My backyard in Goleta, CA
- Date/Time:
- L: November 14, 2004, 01:22-05:02 PST
- RGB:
November 15, 2004, 00:49-01:47 PST
November 16,-17, 2004, 23:08-04:57 PST
- Processing: Taken in CCDSoft v5 using
CCDCommandere. Reduced in
CCDSoft. Aligned with RegiStar. Combined
sub-exposures
with Ray Gralak's Sigma Clip. DDP to with
custom
software. Curves, levels, saturation, unsharp mask, selective
blur in Photoshop.
- Notes: "First light" image with new MI-250
mount. Also a significant test for my new CCDCommander program -
which completely automated the entire image acquisition, guide star
location, auto guiding, mount flipping, mount movement, and focusing
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- Name: IC 2118, NGC 1909, The Witch
Head Nebula
- Type: Reflection nebula
- Constellation: Eridanus
- Distance: 1000 light years
- This nebula is a bit of dust in space that
is reflecting the light from the nearby super giant Rigel in the constellation Orion. The blue
color is caused by Rigel's blue color and also because the dust
reflects blue light better then other colors (similar to our
atmosphere).
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